1 /* libguestfs - the guestfsd daemon
2 * Copyright (C) 2009 Red Hat Inc.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 #ifndef GUESTFSD_DAEMON_H
20 #define GUESTFSD_DAEMON_H
25 #include <sys/types.h>
28 #include <rpc/types.h>
31 #include "../src/guestfs_protocol.h"
33 /*-- in guestfsd.c --*/
34 extern int xwrite (int sock, const void *buf, size_t len);
35 extern int xread (int sock, void *buf, size_t len);
37 extern int add_string (char ***argv, int *size, int *alloc, const char *str);
38 extern int count_strings (char * const* const argv);
39 extern void sort_strings (char **argv, int len);
40 extern void free_strings (char **argv);
41 extern void free_stringslen (char **argv, int len);
43 extern int command (char **stdoutput, char **stderror, const char *name, ...);
44 extern int commandv (char **stdoutput, char **stderror,
45 char * const* const argv);
52 extern int root_mounted;
54 /*-- in stubs.c (auto-generated) --*/
55 extern void dispatch_incoming_message (XDR *);
56 extern guestfs_lvm_int_pv_list *parse_command_line_pvs (void);
57 extern guestfs_lvm_int_vg_list *parse_command_line_vgs (void);
58 extern guestfs_lvm_int_lv_list *parse_command_line_lvs (void);
61 extern void main_loop (int sock);
63 /* ordinary daemon functions use these to indicate errors */
64 extern void reply_with_error (const char *fs, ...);
65 extern void reply_with_perror (const char *fs, ...);
67 /* daemon functions that return files (FileOut) should call
68 * reply, then send_file for each FileOut parameter.
71 extern void send_file ();
74 /* only call this if there is a FileOut parameter */
75 extern void reply (xdrproc_t xdrp, char *ret);
77 /* Helper for functions that need a root filesystem mounted. */
78 #define NEED_ROOT(errcode) \
80 if (!root_mounted) { \
81 reply_with_error ("%s: you must call 'mount' first to mount the root filesystem", __func__); \
87 /* Helper for functions that need an argument ("path") that is absolute. */
88 #define ABS_PATH(path,errcode) \
90 if ((path)[0] != '/') { \
91 reply_with_error ("%s: path must start with a / character", __func__); \
96 /* Helper for functions that need an argument ("path") that is a device. */
97 #define IS_DEVICE(path,errcode) \
99 struct stat statbuf; \
100 if (strncmp ((path), "/dev/", 5) != 0) { \
101 reply_with_error ("%s: %s: expecting a device name", __func__, (path)); \
104 if (stat ((path), &statbuf) == -1) { \
105 reply_with_perror ("%s: %s", __func__, (path)); \
111 * (1) You must match CHROOT_IN and CHROOT_OUT even along error paths.
112 * (2) You must not change directory! cwd must always be "/", otherwise
113 * we can't escape our own chroot.
114 * (3) All paths specified must be absolute.
115 * (4) CHROOT_OUT does not affect errno.
117 #define CHROOT_IN chroot ("/sysroot");
119 do { int old_errno = errno; chroot ("."); errno = old_errno; } while (0)
121 /* Marks functions which are not implemented. */
122 #define XXX_NOT_IMPL(errcode) \
124 reply_with_error ("%s: function not implemented", __func__); \
129 #endif /* GUESTFSD_DAEMON_H */